示例#1
0
文件: CC2500.c 项目: sytuxww/q-sys
// receive a paket data form cc2500
u8 CC2500_ReceivePacket(u8 *rxBuffer)
{
    u8 status;
    u8 LEN=0,i=0;

    status =CC2500_ReadStatus(CCxxx0_RXBYTES);          //RX FIFO 等于0 CRC校验失败 如果大于0CRC校验OK数据能读出
    if((status & 0x7F)==0x00)
    {
        status = CC2500_ReadStatus(CCxxx0_MARCSTATE);
        if((status!=0x0D)&&(status!=0x08))    //0x0D为RX状态
        {
        	CC2500_SetRxd();				//激活(接收或传送)
        }
        return 0;
    }
	
	//LEN = CC2500_ReadReg(CCxxx0_RXFIFO_one);
    LEN = PACKET_LEN;   //采用定长模式
    if(LEN > 0)
    {
		if(LEN<=RFTXDBUFFSIZE)
		{
			CC2500_Select();
			CC2500_WriteByte(CCxxx0_RXFIFO_Muti);
			for(i=0;i<LEN;i++)
			{
				rxBuffer[i] = CC2500_ReadByte();
			}
			CC2500_NoSelect(); 
			CC2500_SetRxd();
			
			return LEN;//(status & CRC_OK);
		}
		else
		{
			CC2500_Select();
			CC2500_WriteByte(CCxxx0_RXFIFO_Muti);
			for(i=0;i<LEN;i++)
			{
				rxBuffer[i] = CC2500_ReadByte();
			}
			CC2500_NoSelect();				
			CC2500_SetRxd();			 
			
			return 0;
		}
    }
    else
    {
        CC2500_SetRxd();
        return 0;
    }
}
示例#2
0
void SelfSend()
{
	sPacketbuf[DES_NUM] = SELFADDRESS;
	sPacketbuf[SRC_NUM] = SELFADDRESS;
	
	CC2500_SeleChannel(12);
	CC2500_SetRecvAddr(SELFADDRESS);

	CC2500_SetRxd();
	
	CC2500_SendPacket(sPacketbuf,PACKET_LEN);
	CC2500_SetRxd();
	
	sPacketbuf[DES_NUM]=0x00;
}
示例#3
0
bool CC2500_PacketCheck()
{
	u8 i;
	u32 *pu32 = NULL;
	
	RSSI = CC2500_ReadStatus(CCxxx0_RSSI);
	LQI = CC2500_ReadStatus(CCxxx0_LQI);
	
	CC2500_ReceivePacket(gPacketbuf);
	
	ReceiveTime = Timer2Counter;
	
	CC2500_SetRxd();		

  pu32 = (u32*) &gPacketbuf[1];
	CRC_ResetDR();
	if (CRC_CalcBlockCRC(pu32, CRC_LENGTH - 1) == pu32[CRC_LENGTH - 1])
	{		
		if (NodeTimestamp[gPacketbuf[SRC_NUM]] != pu32[CRC_LENGTH - 2])
		{
			NodeTimestamp[gPacketbuf[SRC_NUM]] = pu32[CRC_LENGTH - 2];		
			return TRUE;
		}
		else
		{
			return FALSE;
		}
	}
	else
	{
		return FALSE;
	}
}
示例#4
0
文件: CC2500.c 项目: sytuxww/q-sys
void CC2500_SetRecvAddr(CC2500_RECV_ADDR AddrMode,u8 SpecAddr)
{
	CC2500_WriteReg(CCxxx0_ADDR,SpecAddr);	
	CC2500_WriteReg(CCxxx0_PKTCTRL1,AddrMode);//地址检查寄存器
	
	CC2500_SetRxd();
}
示例#5
0
文件: CC2500.c 项目: sytuxww/q-sys
// rf communication
void CC2500_Process(void)
{
	u8 i,j;

#define GDO0_
#ifdef GDO0_
	if(!GDO0_IN())
	{
		return;
	}

	while(GDO0_IN());
#else
    if(!(CC2500_ReadStatus(0x38)&0x01))
    {
    	return;
	}
	while((CC2500_ReadStatus(0x38)&0x01));
#endif

	Debug("Have a packet!\n\r");
    i = CC2500_ReadRSSIValue();

    for(i=0;i<sizeof(bTempBuf);i++) bTempBuf[i]=0;
    CC2500_ReceivePacket(bTempBuf);
	Debug("Receive over!\n\r");
	
    CC2500_SetRxd();
//	CC2500_REnter_WOR();

	
#if 1//def RF_DEBUG_
	Debug("\n\rRX Data:");
	for(j=0;j<sizeof(bTempBuf);j++)
	{	
		Debug("0x%x ",bTempBuf[j]);
	}
	Debug("\n\r");
#endif
}
示例#6
0
/* This function runs before the OS start. */
void NetworkConnecting()
{
	int i, p, test, test1;
	int sendcounter = 0;
	u32 *pu32 = NULL;
	
	test1 = Timer2Counter;
	test = Timer2Counter;
	
	
	sPacketbuf[DES_NUM] = SELFADDRESS;
	sPacketbuf[SRC_NUM] = SELFADDRESS;
	
	CC2500_SeleChannel(0);
	CC2500_SetRecvAddr(SELFADDRESS);

	CC2500_SetRxd();
	
	CC2500_SendPacket(sPacketbuf,PACKET_LEN);
	CC2500_SetRxd();
	
	sPacketbuf[DES_NUM]=0x00;
	NbrList[0]=NbrCount;
	
//	while(RESET==RNG_GetFlagStatus(RNG_FLAG_DRDY));
//	Delay_100us(RNG_GetRandomNumber() & 0x000000f);
  pu32 = (u32*) &sPacketbuf[1];
	while (0 == NodeFlag[SELFADDRESS])
	{
		if (ISIDLE)
		{
			NbrList[0] = NbrCount;
			sPacketbuf[PRC_NUM] = DISCOVERY_MESSAGE;
			arm_copy_q7(NbrList, sPacketbuf+LEN_NUM, NbrList[0]+1);
			pu32[CRC_LENGTH - 2] = Timer2Counter;//Add the timestamp.
			CRC_ResetDR();
			pu32[CRC_LENGTH - 1] = CRC_CalcBlockCRC(pu32, CRC_LENGTH - 1);
			p = Bernoulli(1.0/(MAXNUM-NbrCount+1));
			//Delay_100us(1);
			if (ISIDLE)
			{
				if (0 == DelayFlag)
				{
					if (p/*Bernoulli(1.0/(MAXNUM-NbrCount+1))*/)
					{
						
						CC2500_SendPacket(sPacketbuf, PACKET_LEN);
						CC2500_SetRxd();
						DelayFlag=1;
					}
				}
				else
				{
					Preemptive_Delay_100us(25, &DelayFlag);
					DelayFlag=0;
				}
			}
		}
	
	}
	
	
	test1 = Timer2Counter - test1;
	while(MAXNUM > NbrCount)
	{
		if (0 != DiscoveryHelp)
		{
			if (ISIDLE)
			{
				Delay_100us(1);
				if (ISIDLE)
				{	
          if (Bernoulli(1.0/(MAXNUM-NbrCount+1)))
					{						
						NbrList[0] = NbrCount;
						sPacketbuf[PRC_NUM] = DISCOVERY_MESSAGE;
						arm_copy_q7(NbrList, sPacketbuf+LEN_NUM, NbrList[0]+1);
						pu32[CRC_LENGTH - 2] = Timer2Counter;//Add the timestamp.
						CRC_ResetDR();
						pu32[CRC_LENGTH - 1] = CRC_CalcBlockCRC(pu32, CRC_LENGTH - 1);
						CC2500_SendPacket(sPacketbuf, PACKET_LEN);
						CC2500_SetRxd();
					}
				}
			}	
			DiscoveryHelp = 0;
		}
		
	}
	
	test = Timer2Counter - test;
	while(RESET==RNG_GetFlagStatus(RNG_FLAG_DRDY));
	Delay_100us(RNG_GetRandomNumber() & 0x000000f);
	
	pu32[CRC_LENGTH - 2] = Timer2Counter;//Add the timestamp.
	sendcounter = 3;
	while (0 != sendcounter)
	{
		if (ISIDLE)
		{
			Delay_100us(1);
			if (ISIDLE)
			{				
				NbrList[0] = NbrCount;
				sPacketbuf[PRC_NUM] = DISCOVERY_ACCOMPLISHED;
				arm_copy_q7(NbrList, sPacketbuf+LEN_NUM, NbrList[0]+1);
				CRC_ResetDR();
				pu32[CRC_LENGTH - 1] = CRC_CalcBlockCRC(pu32, CRC_LENGTH - 1);
				CC2500_SendPacket(sPacketbuf, PACKET_LEN);
				CC2500_SetRxd();
				sendcounter--;
			}
		}	
		Delay_100us(10);
	}
	
	printf("NeighbourList:\r\n");
	for (i=0;i<MAXNUM;i++)
	{
		printf("%#x\r\n",NbrList[1+i]);
	}
  printf("t1 = %d\r\n", test1);
	printf("t = %d\r\n", test);
}
示例#7
0
文件: CC2500.c 项目: sytuxww/q-sys
bool CC2500_Init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	EXTI_InitTypeDef EXTI_InitStructure;  
	u8 i = 0;
	u16 Id;
	
	//CS
	GPIO_InitStructure.GPIO_Pin = CC_CS_IO_PIN;
	GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_Init(CC_CS_IO_GROUP, &GPIO_InitStructure);
	
	SPI2_Init();
	
	CC2500_Reset();
	if((Id=CC2500_GetChipId())!=0x8003)
	{
		Debug("Error CC2500 ID: %04x\n\r",Id);
		return FALSE;
	}
	
	CC2500_RfSettings();

	CC2500_Select();
	CC2500_WriteByte(CCxxx0_PATABLE|WRITE_BURST);
	for(i=0;i<8;i++)
	{
		CC2500_WriteByte(paTable_CC2500[i]);
	}
	CC2500_NoSelect();

	CC2500_SetRxd();

	//GDO0
	GPIO_InitStructure.GPIO_Pin = CC_GDO0_IO_PIN;
	GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
	GPIO_Init(CC_GDO0_IO_GROUP, &GPIO_InitStructure);

#if QXW_LCM_ID == 210 || QXW_LCM_ID == 211 || QXW_LCM_ID == 220 || QXW_LCM_ID == 221
	NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = EXTI3_IRQn_Priority;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE
	NVIC_Init(&NVIC_InitStructure);
	
	EXTI_InitStructure.EXTI_Line = EXTI_Line3;             //外部中断线 ,使用第2根
	EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;    //中断模
	EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//中断触发方式
	EXTI_InitStructure.EXTI_LineCmd = ENABLE;              //打开中断
	EXTI_Init(&EXTI_InitStructure);    //调用库函数给寄存器复制

	CC2500_InterruptEnable(FALSE);
	
	GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource3); 
#elif QXW_LCM_ID == 212
	NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = EXTI9_5_IRQn_Priority;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE
	NVIC_Init(&NVIC_InitStructure);
	
	EXTI_InitStructure.EXTI_Line = EXTI_Line6;             //外部中断线 ,使用第2根
	EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;    //中断模
	EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//中断触发方式
	EXTI_InitStructure.EXTI_LineCmd = ENABLE;              //打开中断
	EXTI_Init(&EXTI_InitStructure);    //调用库函数给寄存器复制

	CC2500_InterruptEnable(FALSE);
	
	GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource6); 
#endif
	return TRUE;
}